466
FNCA52 TJSJ 191930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST SAT SEP 19 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-200800-
SOUTHEAST COASTAL PLAINS-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 30 40
TEMP (24H TREND) 74 (-3) 90 (0) 74 90
RH % (24H TREND) 92 (+4) 59 (+1) 93 59
WIND 20FT/EARLY(MPH) E 10 E 11 E 9 E 14
WIND 20FT/LATE(MPH) NE 8 SE 12 E 6 SE 14
MIXING HGT(FT-AGL/MSL) 4780 4640
TRANSPORT WND (MPH) E 10 SE 14
VENT RATE (KT-FT) 43020 55680
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-200800-
SOUTHERN HILLS-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 50 40 50
TEMP (24H TREND) 71 (-4) 88 (+2) 71 88
RH % (24H TREND) 98 (+5) 63 (-5) 98 64
WIND 20FT/EARLY(MPH) E 8 E 9 E 6 E 11
WIND 20FT/LATE(MPH) E 8 SE 10 E 6 SE 11
MIXING HGT(FT-AGL/MSL) 5540 5250
TRANSPORT WND (MPH) E 9 SE 12
VENT RATE (KT-FT) 44320 52500
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-200800-
NORTH COASTAL PLAINS-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 60 50 60
TEMP (24H TREND) 74 (-3) 91 (+1) 74 92
RH % (24H TREND) 99 (+5) 61 (-5) 99 61
WIND 20FT/EARLY(MPH) E 11 E 10 SE 10 SE 12
WIND 20FT/LATE(MPH) SE 6 E 14 SE 6 E 14
MIXING HGT(FT-AGL/MSL) 4760 5240
TRANSPORT WND (MPH) E 9 E 12
VENT RATE (KT-FT) 38080 52400
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-200800-
NORTHERN HILLS-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 80 60 90
TEMP (24H TREND) 71 (-3) 90 (+2) 71 90
RH % (24H TREND) 100 (+3) 62 (-5) 100 63
WIND 20FT/EARLY(MPH) SE 9 E 8 SE 8 SE 9
WIND 20FT/LATE(MPH) SE 5 NE 11 SE 6 E 12
MIXING HGT(FT-AGL/MSL) 5480 5330
TRANSPORT WND (MPH) E 7 SE 9
VENT RATE (KT-FT) 32880 42640
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-200800-
WEST COAST-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 50 70
TEMP (24H TREND) 73 (-2) 92 (+1) 73 92
RH % (24H TREND) 99 (+2) 62 (-4) 98 63
WIND 20FT/EARLY(MPH) E 8 E 10 E 8 SE 12
WIND 20FT/LATE(MPH) E 8 SE 12 E 10 SE 13
MIXING HGT(FT-AGL/MSL) 4870 4740
TRANSPORT WND (MPH) SE 8 SE 12
VENT RATE (KT-FT) 34090 47400
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-200800-
EASTERN INTERIOR-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 50 40 60
TEMP (24H TREND) 72 (-4) 90 (+2) 72 90
RH % (24H TREND) 98 (+4) 60 (-5) 98 61
WIND 20FT/EARLY(MPH) E 9 SE 9 SE 8 SE 11
WIND 20FT/LATE(MPH) SE 8 SE 10 SE 6 SE 11
MIXING HGT(FT-AGL/MSL) 5920 5880
TRANSPORT WND (MPH) SE 8 SE 10
VENT RATE (KT-FT) 41440 52920
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-200800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 60 50 50
TEMP (24H TREND) 70 (-4) 86 (+3) 70 86
RH % (24H TREND) 100 (+3) 64 (-7) 99 65
WIND 20FT/EARLY(MPH) E 8 SE 9 SE 8 SE 10
WIND 20FT/LATE(MPH) E 6 SE 9 SE 5 SE 10
MIXING HGT(FT-AGL/MSL) 4210 4730
TRANSPORT WND (MPH) SE 9 SE 12
VENT RATE (KT-FT) 33680 47300
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-200800-
CENTRAL MOUNTAIN RANGE-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 80 50 80
TEMP (24H TREND) 68 (-4) 87 (+4) 68 87
RH % (24H TREND) 100 (+4) 65 (-8) 100 67
WIND 20FT/EARLY(MPH) E 5 SE 6 SE 5 SE 9
WIND 20FT/LATE(MPH) LGT/VAR SE 6 SE 6 SE 9
MIXING HGT(FT-AGL/MSL) 6670 5550
TRANSPORT WND (MPH) SE 5 SE 9
VENT RATE (KT-FT) 26680 44400
DISPERSION 5 5
DSI 1 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-200800-
CAYEY MOUNTAIN RANGE-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 50 30 50
TEMP (24H TREND) 71 (-3) 85 (+1) 70 85
RH % (24H TREND) 99 (+2) 66 (-4) 99 67
WIND 20FT/EARLY(MPH) E 6 E 8 SE 5 SE 10
WIND 20FT/LATE(MPH) E 5 SE 8 SE 5 SE 10
MIXING HGT(FT-AGL/MSL) 4780 5150
TRANSPORT WND (MPH) SE 8 SE 12
VENT RATE (KT-FT) 33460 51500
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-200800-
VIEQUES-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 40 40
TEMP (24H TREND) 78 (-2) 90 (+1) 78 90
RH % (24H TREND) 84 (0) 55 (-5) 84 56
WIND 20FT/EARLY(MPH) E 10 E 9 E 9 SE 11
WIND 20FT/LATE(MPH) E 9 SE 8 SE 9 SE 10
MIXING HGT(FT-AGL/MSL) 3320 3250
TRANSPORT WND (MPH) SE 9 SE 13
VENT RATE (KT-FT) 26560 35750
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-200800-
CULEBRA-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 50 40
TEMP (24H TREND) 79 (-2) 91 (+2) 79 91
RH % (24H TREND) 85 (+1) 58 (-7) 86 58
WIND 20FT/EARLY(MPH) E 10 E 9 E 9 SE 11
WIND 20FT/LATE(MPH) E 9 SE 9 SE 8 SE 11
MIXING HGT(FT-AGL/MSL) 3330 3250
TRANSPORT WND (MPH) E 10 SE 10
VENT RATE (KT-FT) 29970 29250
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-200800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 30 30
TEMP (24H TREND) 75 (-2) 92 (+2) 75 92
RH % (24H TREND) 94 (+6) 57 (0) 92 58
WIND 20FT/EARLY(MPH) E 10 E 14 E 11 E 18
WIND 20FT/LATE(MPH) E 10 SE 17 E 12 SE 18
MIXING HGT(FT-AGL/MSL) 5040 4810
TRANSPORT WND (MPH) E 14 SE 17
VENT RATE (KT-FT) 60480 72150
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-200800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40 40
TEMP (24H TREND) 77 (-3) 88 (+1) 78 88
RH % (24H TREND) 85 (+1) 60 (-5) 85 61
WIND 20FT/EARLY(MPH) E 10 E 10 E 9 SE 11
WIND 20FT/LATE(MPH) E 10 SE 9 SE 9 SE 11
MIXING HGT(FT-AGL/MSL) 3100 3300
TRANSPORT WND (MPH) SE 10 SE 14
VENT RATE (KT-FT) 27900 39600
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-200800-
ST CROIX-
330 PM AST SAT SEP 19 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 30 20
TEMP (24H TREND) 78 (-2) 90 (+2) 78 90
RH % (24H TREND) 88 (+1) 61 (-4) 89 62
WIND 20FT/EARLY(MPH) E 9 E 9 E 9 E 11
WIND 20FT/LATE(MPH) E 9 SE 9 E 9 SE 10
MIXING HGT(FT-AGL/MSL) 4980 4750
TRANSPORT WND (MPH) SE 8 SE 12
VENT RATE (KT-FT) 34860 47500
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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